Broadhead

ABSTRACT

An arrowhead comprises a conical ferrule having a rounded tip with a slot therein. A primary blade is securely brazed on the outside of the ferrule. The primary blade extends forward well beyond the rounded tip and has an opening in that portion of the blade which projects beyond the rounded tip. A replaceable auxiliary blade fits into the ferrule slot and includes a pair of fastening arms which snap into a pair of holes on the ferrule. The auxiliary blade is positioned perpendicular to the primary blade with its pointed tip located within the primary blade opening.

United States Patent [1 1 Matlock, Jr.

[ June 3,1975

[ BROADHEAD [75] Inventor: Oscar N. Matlock, Jr., Pine Bluff,

Ark.

[52] US. Cl 273/1065 B [51] Int. Cl. F4111 5/02 [58] Field of Search 273/1065; D22/l2 [56] References Cited UNITED STATES PATENTS 2,570,782 10/1951 Evatt 273/1065 B 2,829,894 4/1958 Henkel 273/1065 B 2,909,372 10/1959 Neri 273/1065 B 2,912,247 11/1959 Doonan 273/1065 8 OTHER PUBLICATIONS Archers Bible 3/22/67 p. 77 Deadhead" N0.

RP-442. Archers Bible 3/22/67 p. 75 Bear Razor Head No. RP-400 end view actual size.

Primary Examiner-Paul E. Shapiro Attorney, Agent, or Firm.lohn G. Heimovics; Donald S. Olexa; Sheldon L. Epstein 57 ABSTRACT An arrowhead comprises a conical ferrule having a rounded tip with a slot therein. A primary blade is securely brazed on the outside of the ferrule. The primary blade extends forward well beyond the rounded tip and has an opening in that portion of the blade which projects beyond the rounded tip. A replaceable auxiliary blade fits into the ferrule slot and includes a pair of fastening arms which snap into a pair of holes on the ferrule. The auxiliary blade is positioned perpendicular to the primary blade with its pointed tip located within the primary blade opening.

10 Claims, 3 Drawing Figures BROADHEAD BACKGROUND OF THE INVENTION The present invention relates generally to arrowheads and more particularly to an improved arrowhead for use in hunting.

In recent years, arrowheads designed for use in hunting have been constructed with various types of replaceable blades to maximize ease of replacement of damaged blades in the field. However, such replaceable blade constructions have presented some shortcomings with respect to the strength of the blade and the ability of these blades to penetrate a target. For example, U.S. Pat. No. 2,829,894 shows an arrowhead wherein both the primary blade and the auxiliary blade are replaceable. In this construction, the ferrule extends well into the forward portion of the primary blade where it may produce a great deal of drag resistance and therefore reduce the velocity of the arrow during flight with a resulting lower impact velocity into the target. In addition, the tip of the auxiliary blade is not exposed since it is located within a slot in the ferrule and the body of the auxiliary blade is positioned well to the rear of the arrowhead.

In U.S. Pat. No. 2,909,372, another arrowhead construction is shown having replaceable primary and aux iliary blades. The primary and auxiliary blades are dove-tailed and clamped against the tip of the ferrule. Since both the primary and auxiliary blades interlock at their rear with the ferrule, if it happens that the arrowhead hits something very hard at the target the twisting forces developed might on occasion twist the primary blade out ofits interlock slot on the ferrule and thereby result in less penetration than normally possible. In addition, since the tip of the auxiliary blade is not exposed but dove-tailed within the primary blade maximum exposure of the tip is reduced.

SUMMARY OF THE INVENTION The present invention provides an arrowhead com prising a ferrule having a conical body with a rounded tip on the forward end thereof. The ferrule has a planar slot in its forward end extending rearward into its conical body and has a pair of holes located on opposite sides of the conical body lying in substantially the same plane as the planar slot. A flat primary blade is securely affixed to the outside of the conical body and lies in a plane substantially perpendicular to that of the planar slot. The primary blade extends forward well beyond the rounded tip of the ferrule and has an opening in its forward portion which projects beyond the rounded tip of the ferrule. A flat auxiliary blade has its forward portion positioned within the planar slot. The forward portion of the auxiliary blade extends forward beyond the rounded tip of the ferrule and terminates in a pointed tip which is located within the primary blade opening. The auxiliary blade further comprises a pair of fastening members, one of which is positioned within each of the holes in the conical ferrule body.

OBJECTS OF THE INVENTION An object of the present invention is the provision of an improved hunting arrowhead.

Another object of the present invention is the provision of an a rowhead which may utilize either one or two blades.

A further object of the present invention is the provision of a hunting arrowhead having maximized exposure of its cutting blades to thereby provide maximum cutting action.

Yet another object of the present invention is the provision of a hunting arrowhead in which the cutting blades are positioned to maximize penetration.

A still further object of the present invention is the provision of a hunting arrowhead which is stable in flight and compression resistant on impact.

Another object of the present invention is the provision of a hunting arrowhead which is easily removable from the arrow shaft.

Yet another object of the present invention is the provision ofa hunting arrowhead in which the auxiliary blade is extremely inexpensive and easy to replace in the field.

Other objects, advantages and novel features of the present invention will become apparent from the fol lowing detailed description of the invention when considered in conjunction with the accompanying drawmgs.

DETAILED DESCRIPTION OF THE DRAWINGS FIG. 1 is a pictorial view of the arrowhead of the present invention with the auxiliary blade shown in phantom;

FIG. 2 is a front view of the arrowhead of the present invention;

FIG. 3 is a side view of the arrowhead of the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENT Referring now to FIGS. 1, 2 and 3, the arrowhead of the present invention will be described in detail. The arrowhead is formed about a ferrule 10 which has a conical body portion 12 and a rounded tip 14 on its forward end. A planar slot 16 is cut in the forward end of the ferrule and extends rearward therefrom. A pair of holes 18 and 20, which are preferably circular, are located on opposite sides of the rear portion of the ferrule with the centers of the holes being coplanar with the planar slot 16, located on opposite sides of the rear portion of the ferrule with the centers of the holes being coplanar with the planar slot 16. The ferrule 10 is preferably made of steel.

A flat primary blade 30 is securely affixed to the outside of the conical ferrule body 12 so as to lie in a plane substantially perpendicular to the planar slot 16. The primary blade 30 is preferably attached to the conical ferrule body 12 by braising along the tapered straight portions 32 and 34 of the rear portion of the primary blade 30. The primary blade 30 extends well forward of the rounded ferrule tip 14 and has a generally teardrop shaped opening 36 in its forward portion. The opening 36 also extends well beyond the rounded ferrule tip 14. The primary blade 30 has curved ground edges 38 and 40. The primary blade 30 is preferably formed of spring steel, having a thickness of 0.040 inch. The arrowhead as described thus far will function with excellent effectiveness as a single blade broadhead.

However, where additional cutting action is desired, an auxiliary blade 50 (as shown in phantom in FIG. 1 and in place in FIGS. 2 and 3) may be easily added. The flat auxiliary blade 50 is attached to the ferrule 10 by rotating one side of the blade through the opening 36 in primary blade 30 and then positioning the forward portion 52 of the blade 50 in the planar slot 16.

The blade 50 is lowered into the slot 16, until flat portion 54 abuts the bottom of the slot 16, and a pair of fastening arms 56 and 58 are sprung in an outward direction until the tips 60 and 62 of arms 56 and 58 snap into holes 20 and 18, respectively. The auxiliary blade 50 may be removed by merely reversing the process and springing the arms 56 and 58 in an outward direction while lifting the blade 50 out of the slot 16 and rotating it through the opening 36 in the primary blade. When snapped into position, the forward portion of the auxiliary blade 50 extends beyond the rounded ferrule tip 14 and terminates in a pointed tip 64 which lies within the opening 36 in the primary blade 30. The auxiliary blade 50 has a pair of curved cutting edges 66 and 68. The blade 50 is preferably made of spring steel having a thickness of 0.010 inch.

A unique and highly significant feature of the arrowhead of the present invention is the complete exposure of all four cutting edges 38, 40, 66 and 68. This feature provides for maximum cutting action. In addition, since the ferrule is positioned well to the rear of the primary blade 30, and since even the auxiliary blade 50 projects beyond the ferrule tip 14, the ferrule 10 does not interfere in any way with the penetration of the arrowhead into the target. Furthermore, since the primary blade 30 possesses exceptional hardness and strength and since the blade 30 is securely affixed to the ferrule 10, the arrowhead of the present invention is highly compression resistant on impact. The primary blade 30 is of sufficient thickness and strength to be resharpened in the field if necessary. The easily replaceable auxiliary blade 50 locks firmly and in true alignment to the ferrule 10 to prohibit loosening on impact and to prevent wind planing and noise during flight.

The ferrule 10 may be hollow or have a bore in that it may be mounted directly on an arrow shaft by inserting the shaft into the rear portion of the ferrule, or in the alternative, the ferrule 10 may be fitted with a screw on adapter to permit the arrowhead of the present invention to be screwed on and off an arrow shaft so that the arrowhead may be replaced with another hunting arrowhead or with various target arrowheads.

While there has been described what is at present considered to be the preferred embodiment of the present invention, it will be obvious to those skilled in the art that various changes and modifications may be made therein without departing from the invention. It is, therefore, aimed in the appended claims to cover all such changes and modifications as fall within the true spirit and scope of the invention.

What is claimed is:

1. An arrowhead comprising:

a ferrule having a conical body with a tip on the forward end of the ferrule, a planar slot in the ferrule extending rearward from the tip of the ferrule into the conical body;

a flat primary blade securely fixed to the outside of the conical body, the primary blade lying in a plane substantially perpendicular to that of the planar slot and extending forward well beyong the ferrule tip, the primary blade having an opening in the portion of the primary blade which projects beyong the ferrule tip;

a flat auxiliary blade having a forward portion thereof positioned within the planar slot and rearwardly directed tips, the forward portion extending forward beyond the ferrule tip and terminating in a point located within the primary blade opening; and

means on the ferrule located on the opposite sides of the conical body substantially in the same plane as the slot for receiving the rearwardly directed tips of the auxiliary blade.

2. An arrowhead as recited in claim 1 wherein the means located on the ferrule are holes.

3. An arrowhead as set forth in claim 2 wherein said flat auxiliary blade further comprises a pair of fastening members, one of which is positioned within each of said holes.

4. An arrowhead as set forth in claim 2 wherein each of said pair of holes is circular, the centers of said circular holes being coplanar with said planar slot.

5. An arrowhead as recited in claim 2 wherein the holes are circular holes.

6. An arrowhead as recited in claim 2 wherein the conical body has a bore for receiving one end of an arrow shaft.

7. An arrowhead as set forth in claim 1 wherein said flat auxiliary blade is substantially thinner than said flat primary blade.

8. An arrowhead as set forth in claim 1 wherein said primary blade is brazed on the outside of said conical body.

9. An arrowhead comprising:

a ferrule having a conical body with a rounded tip on the forward end of said ferrule, a planar slot in said ferrule extending rearward from the forward end of said ferrule into said conical body, and a pair of circular holes located on opposite sides of said conical body, the center of said circular holes being coplanar with said planar slot;

:1 flat primary blade securely brazed on the outside of said conical body, said main blade lying in a plane substantially perpendicular to that of said planar slot, and extending forward well beyond said rounded tip, said primary blade having an opening in the portion of said main blade which projects beyond said rounded tip; and

a flat auxiliary blade having a forward portion thereof positioned within said planar slot, said forward portion extending forward beyond said rounded tip and terminating in a pointed tip located within said primary blade opening, said auxiliary blade having a pair of fastening members, one of which is adapted to fit in each of said circular holes.

10. An arrowhead comprising:

a ferrule having a conical body with a tip on the forward end of the ferrule, a planar slot in the ferrule extending rearward from the top of the ferrule into the conical body,

a flat primary blade securely fixed to the outside of the conical body, the primary blade lying in a plane substantially perpendicular to that of the planar slot and extending forward well beyong the ferrule tip, the primary blade having an opening in the portion of the primary blade which projects beyong the ferrule tip; and

a flat auxiliary blade having a forward portion thereof positioned within the planar slot, the forward portion extending forward beyond the ferrule tip and terminating in a point located within the primary blade opening. 

1. An arrowhead comprising: a ferrule having a conical body with a tip on the forward end of the ferrule, a planar slot in the ferrule extending rearward from the tip of the ferrule into the conical body; a flat primary blade securely fixed to the outside of the conical body, the primary blade lying in a plane substantially perpendicular to that of the planar slot and extending forward well beyong the ferrule tip, the primary blade having an opening in the portion of the primary blade which projects beyong the ferrule tip; a flat auxiliary blade having a forward portion thereof positioned within the planar slot and rearwardly directed tips, the forward portion extending forward beyond the ferrule tip and terminating in a point located within the primary blade opening; and means on the ferrule located on the opposite sides of the conical body substantially in the same plane as the slot for receiving the rearwardly directed tips of the auxiliary blade.
 2. An arrowhead as recited in claim 1 wherein the means located on the ferrule are holes.
 3. An arrowhead as set forth in claim 2 wherein said flat auxiliary blade further comprises a pair of fastening members, one of which is positioned within each of said holes.
 4. An arrowhead as set forth in claim 2 wherein each of said pair of holes is circular, the centers of said circular holes being coplanar with said planar slot.
 5. An arrowhead as recited in claim 2 wherein the holes are circular holes.
 6. An arrowhead as recited in claim 2 wherein the conical body has a bore for receiving one end of an arrow shaft.
 7. An arrowhead as set forth in claim 1 wherein said flat auxiliary blade is substantially thinner than said flat primary blade.
 8. An arrowhead as set forth in claim 1 wherein said primary blade is brazed on the outside of said conical body.
 9. An arrowhead comprising: a ferrule having a conical body with a rounded tip on the forward end of said ferrule, a planar slot in said ferrule extending rearward from the forward end of said ferrule into said conical body, and a pair of circular holes located on opposite sides of said conical body, the center of said circular holes being coplanar with said planar slot; a flat primary blade securely brazed on the outside of said conical body, said main blade lying in a plane substantially perpendicular to that of said planar slot, and extending forward well beyond said rounded tip, said primary blade having an opening in the portion of said main blade which projects beyond said rounded tip; and a flat auxiliary blade having a forward portion thereof positioned within said planar slot, said forward portion extending forward beyond said rounded tip and terminating in a pointed tip located within said primary blade opening, said auxiliary blade having a pair of fastening members, one of which is adapted to fit in each of said circular holes.
 9. An arrowhead comprising: a ferrule having a conical body with a rounded tip on the forward end of said ferrule, a planar slot in said ferrule extending rearward from the forward end of said ferrule into said conical body, and a pair of circular holes located on opposite sides of said conical body, the center of said circular holes being coplanar with said planar slot; a flat primary blade securely brazed on the outside of said conical body, said main blade lying in a plane substantially perpendicular to that of said planar slot, and extending forward well beyond said rounded tip, said primary blade having an opening in the portion of said main blade which projects beyond said rounded tip; and a flat auxiliary blade having a forward portion thereof positioned within said planar slot, said forward portion extending forward beyond said rounded tip and terminating in a pointed tip located within said primary blade opening, said auxiliary blade having a pair of fastening members, one of which is adapted to fit in each of said circular holes. 